it was actually planned in the name of science, trying to prove if you could survive a catastrophe just like this. people behind the fiery experiment will join us to talk about what they learned. >>> an emotional ann romney talks about a ritual her husband will prepare before the presidential debate. i'm barack obama and i approve this message. romney: "it's time to stand up to the cheaters" vo: tough on china? not mitt romney. when a flood of chinese tires threatened a thousand american jobs... it was president obama who stood up to china and protected american workers. mitt romney attacked obama's decision... said standing up to china was "bad for the nation and our workers." how can mitt romney take on the cheaters... when he's taking their side? on gasoline. i am probably going to the gas station about once a month. last time i was at a gas station was about...i would say... two months ago. i very rarely put gas in my chevy volt. i go to the gas station such a small amount that i forget how to put gas in my car. [ male announcer ] and it's not just these owners giving the volt high